Posted: Fri Jan 27, 2012 6:48 pm
AncientBrit wrote:Keep up the good work Harry.
I always look to reading the results of your latest kit.
How do you find the time??
Cheers,
Graham
It's summer here Graham, longer days...
Forum for discussion of television and imaging using mechanical, radio, and early electronic systems.
https://www.taswegian.com/NBTV/forum/
https://www.taswegian.com/NBTV/forum/viewtopic.php?f=1&t=1486
AncientBrit wrote:Keep up the good work Harry.
I always look to reading the results of your latest kit.
How do you find the time??
Cheers,
Graham
AncientBrit wrote:Keep up the good work Harry.
I always look to reading the results of your latest kit.
How do you find the time??
Cheers,
Graham
gary wrote:Harry, I should just emphasise, in case there is any confusion, that it is not driving the stepper harder (with voltage or current) that causes it to go faster - it is overcoming the tendency of the winding inductance to impede current flow (rise time = L/Rw) by increasing the circuit resistance (rise time = L/(Rw + Rlimiter).
Anyway, I am trying to not be too technical, but a good analysis can be found here:
http://www.divms.uiowa.edu/~jones/step/ ... #resistive
gary wrote:yes, it ought to be possible to use one as a kind of "sonic wheel" - if you could find one with 32 poles - or sub/super multiple thereof...
Metallica Man X wrote:Lookin' good! Can't wait to see how it works
By the way, the X is just the letter X, not 10 lol.
AncientBrit wrote:Harry,
How 'true' does the unsupported outer edge of the drum run when up to speed?
Does spinning it essentially get rid of wobble?
Regards,
Graham
gary wrote:Harry, only one of those images seem to have uploaded correctly...